25730680785 has 16 divisors (see below), whose sum is σ = 42281768256. Its totient is φ = 13352136768.

The previous prime is 25730680777. The next prime is 25730680813. The reversal of 25730680785 is 58708603752.

It is not a de Polignac number, because 25730680785 - 2³ = 25730680777 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23180239 + ... + 23181348.

It is an arithmetic number, because the mean of its divisors is an integer number (2642610516).

Almost surely, 2^25730680785 is an apocalyptic number.

It is an amenable number.

25730680785 is a deficient number, since it is larger than the sum of its proper divisors (16551087471).

25730680785 is a wasteful number, since it uses less digits than its factorization.

25730680785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46361632.

The product of its (nonzero) digits is 2822400, while the sum is 51.

The spelling of 25730680785 in words is "twenty-five billion, seven hundred thirty million, six hundred eighty thousand, seven hundred eighty-five".